Found this recipe at Allrecipes.com. This is really really easy to make and it is really yummy!

1/2 cup butter
2 1/4 cups brown sugar
1/2 cup milk
3/4 cup peanut butter
1 tsp. vanilla extract
3 1/2 cups sifted confectioners' sugar

1. Melt butter in a medium saucepan over medium heat. Stir in brown sugar and milk. Bring to boil and boil for 2 minutes stirring frequently.
2.Remove from heat. Stir in peanut butter and vanilla.
3.Pour over sifted confectioners' sugar in a large mixing bowl. Beat until smooth; pour into an 8x8 dish. Chill until firm and cut into squares.

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